Search for dissertations about: "non-collinear"
Showing result 1 - 5 of 19 swedish dissertations containing the word non-collinear.
-
1. Non-collinear Magnetism in d- and f-electron Systems
Abstract : In this thesis, non-collinear magnetism has been studied by using density functional theory and the augmented plane wave method with local orbitals (APW+lo). Two conditions for non-collinear instabilities have been identified in this thesis. First, the Fermi energy should cut through both spin up and down states. READ MORE
-
2. A Theoretical Study of Magnetism in Nanostructured Materials
Abstract : A first-principles linear scaling real-space method for investigating non-collinear magnetic behaviour of nanostructured materials has been developed. With this method, the magnetic structures of small supported transition metal clusters have been examined. READ MORE
-
3. Augmented Planewaves, Developments and Applications to Magnetism
Abstract : The present thesis concerns method development and applications in the field of first principles electronic structure calculations.Augmented planewaves combine the simple planewaves with exact solutions of the Schrödinger equation for a spherical potential. READ MORE
-
4. Electronic structure and exchange interactions from ab initio theory : New perspectives and implementations
Abstract : In this thesis, the magnetic properties of several materials were investigated using first principle calculations. The ab initio method named real space linear muffin-tin orbitals atomic sphere approximation (RS-LMTO-ASA) was used to calculate the electronic structure and magnetic properties of bulk systems, surface and nanostructures adsorbed on surfaces. READ MORE
-
5. Materials Engineering Using Density Functional Theory
Abstract : This doctoral thesis presents density functionalcalculations applied in several domains of interest in solidstate physics and materials science. Non-collinear magnetismhas been studied both in an artificial multi-layer structure,which could have technological relevance as a magnetic sensordevice, and as excitations in 3d ferromagnets. READ MORE